An oil at 50C with properties similar to engine oil passesthrough a 30 cm diameter pipe with an average velocity of 6 m/s. A200 m long section of pipe passes under a frozen lake with watersat 0 C. The pipe has the same surface temperature as the lakewater.
(a) Find the temperature of the oil as it leaves the lake.Neglect the thermal resistance of the pipematerial.
(b) At what rate is heat transferred from the oil?
